MPL3115A2 Altimeter example. More...

#include <MPL3115A2.h>

Public Member Functions
	MPL3115A2 (PinName sda, PinName scl, int addr, PinName int1, PinName int2)
	MPL3115A2 constructor.
uint8_t	getDeviceID ()
	Get the value of the WHO_AM_I register.
unsigned char	getStatus (void)
	Return the STATUS register value.
float	getAltimeter (void)
	Get the altimeter value.
unsigned int	getAltimeterRaw (unsigned char *dt)
	Get the altimeter value in raw mode.
float	getPressure (void)
	Get the pressure value.
unsigned int	getPressureRaw (unsigned char *dt)
	Get the pressure value in raw mode.
float	getTemperature (void)
	Get the temperature value.
unsigned int	getTemperatureRaw (unsigned char *dt)
	Get the temperature value in raw mode.
void	Altimeter_Mode (void)
	Set the Altimeter Mode.
void	Barometric_Mode (void)
	Set the Barometric Mode.
unsigned int	getAllData (float *f)
	Get the altimeter or pressure and temperature values.
unsigned int	getAllData (float f, float d)
	Get the altimeter or pressure and temperature values and the delta values.
void	getAllMaximumData (float *f)
	Get the altimeter or pressure and temperature captured maximum value.
void	getAllMinimumData (float *f)
	Get the altimeter or pressure and temperature captured minimum value.
unsigned int	getAllDataRaw (unsigned char *dt)
	Get the altimeter or pressure, and temperature values in raw mode.
unsigned int	isDataAvailable (void)
	Return if there are date available.
void	Oversample_Ratio (unsigned int ratio)
	Set the oversampling rate value.
void	DataReady (void(*fptr)(void), unsigned char OS)
	Configure the sensor to streaming data using Interrupt.
void	AltitudeTrigger (void(*fptr)(void), unsigned short level)
	Configure the sensor to generate an Interrupt crossing the center threshold.
void	Reset (void)
	Soft Reset.
void	SetPressureOffset (char offset)
	Configure the Pressure offset.
void	SetTemperatureOffset (char offset)
	Configure the Temperature offset.
void	SetAltitudeOffset (char offset)
	Configure the Altitude offset.

Detailed Description

MPL3115A2 Altimeter example.

 #include "mbed.h"
 #include "MPL3115A2.h"
 
 #define MPL3115A2_I2C_ADDRESS (0x60<<1)
 MPL3115A2 wigo_sensor1(PTE0, PTE1, MPL3115A2_I2C_ADDRESS);
 Serial pc(USBTX, USBRX);

 // pos [0] = altitude or pressure value 
 // pos [1] = temperature value 
 float sensor_data[2];

 int main(void) {

    pc.baud( 230400);
    pc.printf("MPL3115A2 Altimeter mode. [%d]\r\n", wigo_sensor1.getDeviceID()); 

    wigo_sensor1.Oversample_Ratio( OVERSAMPLE_RATIO_32);
    
    while(1) {
        //
        if ( wigo_sensor1.isDataAvailable()) {
            wigo_sensor1.getAllData( &sensor_data[0]);
            pc.printf("\tAltitude: %f\tTemperature: %f\r\n", sensor_data[0], sensor_data[1]);
        }
        //
        wait( 0.001);
    }

 }

Definition at line 55 of file MPL3115A2.h.

Constructor & Destructor Documentation

MPL3115A2	(	PinName	sda,
		PinName	scl,
		int	addr,
		PinName	int1,
		PinName	int2
	)

MPL3115A2 constructor.

Parameters:

sda	SDA pin
sdl	SCL pin
addr	addr of the I2C peripheral
int1	InterruptIn
int2	InterruptIn

Interrupt schema:

* The Altitude Trigger use the IRQ1 - Altitude Trigger -> MPL3115A2_Int1.fall -> AltitudeTrg_IRQ -> MPL3115A2_usr1_fptr

* The Data ready use the IRQ2 - Data Ready -> MPL3115A2_Int2.fall -> DataReady_IRQ -> MPL3115A2_usr2_fptr

Definition at line 41 of file MPL3115A2.cpp.

Member Function Documentation

void Altimeter_Mode ( void )

Set the Altimeter Mode.

Returns:: none

Definition at line 211 of file MPL3115A2.cpp.

void AltitudeTrigger	(	void(*)(void)	fptr,
		unsigned short	level
	)

Configure the sensor to generate an Interrupt crossing the center threshold.

Parameters:

user	functin callback, level in meter

Returns:: none

Definition at line 125 of file MPL3115A2.cpp.

void Barometric_Mode ( void )

Set the Barometric Mode.

Returns:: none

Definition at line 182 of file MPL3115A2.cpp.

void DataReady	(	void(*)(void)	fptr,
		unsigned char	OS
	)

Configure the sensor to streaming data using Interrupt.

Parameters:

user	functin callback, oversampling values. See MPL3115A2.h

Returns:: none

Definition at line 71 of file MPL3115A2.cpp.

unsigned int getAllData ( float * f )

Get the altimeter or pressure and temperature values.

Parameters:

array of float f[2]

Returns:: 0 no data available, 1 for data available

Definition at line 302 of file MPL3115A2.cpp.

unsigned int getAllData	(	float *	f,
		float *	d
	)

Get the altimeter or pressure and temperature values and the delta values.

Parameters:

array of float f[2], array of float d[2]

Returns:: 0 no data available, 1 for data available

Definition at line 318 of file MPL3115A2.cpp.

unsigned int getAllDataRaw ( unsigned char * dt )

Get the altimeter or pressure, and temperature values in raw mode.

Parameters:

array of unsigned char[5]

Returns:: 1 if data are available, 0 if not.

Definition at line 471 of file MPL3115A2.cpp.

void getAllMaximumData ( float * f )

Get the altimeter or pressure and temperature captured maximum value.

Parameters:

array of float f[2]

Returns:: 0 no data available, 1 for data available

Definition at line 337 of file MPL3115A2.cpp.

void getAllMinimumData ( float * f )

Get the altimeter or pressure and temperature captured minimum value.

Parameters:

array of float f[2]

Returns:: 0 no data available, 1 for data available

Definition at line 348 of file MPL3115A2.cpp.

float getAltimeter ( void )

Get the altimeter value.

Returns:: altimeter value as float

Definition at line 359 of file MPL3115A2.cpp.

unsigned int getAltimeterRaw ( unsigned char * dt )

Get the altimeter value in raw mode.

Parameters:

dt	pointer to unsigned char array

Returns:: 1 if data are available, 0 if not.

Definition at line 489 of file MPL3115A2.cpp.

unsigned char getDeviceID ( )

Get the value of the WHO_AM_I register.

Returns:: DEVICE_ID value == 0xC4

Definition at line 278 of file MPL3115A2.cpp.

float getPressure ( void )

Get the pressure value.

Returns:: pressure value as float

Definition at line 394 of file MPL3115A2.cpp.

unsigned int getPressureRaw ( unsigned char * dt )

Get the pressure value in raw mode.

Parameters:

dt	pointer to unsigned char array

Returns:: 1 if data are available, 0 if not.

Definition at line 506 of file MPL3115A2.cpp.

unsigned char getStatus ( void )

Return the STATUS register value.

Returns:: STATUS register value

Definition at line 294 of file MPL3115A2.cpp.

float getTemperature ( void )

Get the temperature value.

Returns:: temperature value as float

Definition at line 437 of file MPL3115A2.cpp.

unsigned int getTemperatureRaw ( unsigned char * dt )

Get the temperature value in raw mode.

Parameters:

dt	pointer to unsigned char array

Returns:: 1 if data are available, 0 if not.

Definition at line 524 of file MPL3115A2.cpp.

unsigned int isDataAvailable ( void )

Return if there are date available.

Returns:: 0 for no data available, bit0 set for Temp data available, bit1 set for Press/Alti data available bit2 set for both Temp and Press/Alti data available

Definition at line 284 of file MPL3115A2.cpp.

void Oversample_Ratio ( unsigned int ratio )

Set the oversampling rate value.

Parameters:

oversampling values. See MPL3115A2.h

Returns:: none

Definition at line 239 of file MPL3115A2.cpp.

void Reset ( void )

Soft Reset.

Parameters:

none

Returns:: none

Definition at line 59 of file MPL3115A2.cpp.

void SetAltitudeOffset ( char offset )

Configure the Altitude offset.

Altitude Data User Offset Register (OFF_H) is expressed as a 2’s complement number in meters. The user offset register provides user adjustment to the vertical height of the Altitude output. The range of values are from -128 to +127 meters. In RAW output mode no scaling or offsets will be applied in the digital domain

Parameters:

offset

Returns:: none

Definition at line 560 of file MPL3115A2.cpp.

void SetPressureOffset ( char offset )

Configure the Pressure offset.

Pressure user accessible offset trim value expressed as an 8-bit 2's complement number. The user offset registers may be adjusted to enhance accuracy and optimize the system performance. Range is from -512 to +508 Pa, 4 Pa per LSB. In RAW output mode no scaling or offsets will be applied in the digital domain

Parameters:

offset

Returns:: none

Definition at line 540 of file MPL3115A2.cpp.

void SetTemperatureOffset ( char offset )

Configure the Temperature offset.

Temperature user accessible offset trim value expressed as an 8-bit 2's complement number. The user offset registers may be adjusted to enhance accuracy and optimize the system performance. Range is from -8 to +7.9375°C 0.0625°C per LSB. In RAW output mode no scaling or offsets will be applied in the digital domain

Parameters:

offset

Returns:: none

Definition at line 550 of file MPL3115A2.cpp.

Type:	Library
Created:	25 Jul 2014
Imports:	5
Forks:	0
Commits:	12
Dependents:	7
Dependencies:	0
Followers:	36

MPL3115A2 Class Reference

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

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MPL3115A2 Class Reference

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Repository toolbox

Repository details

Important Information for this Arm website

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